CN208892476U - A kind of dish-washing machine and its heating device - Google Patents

Abstract

The utility model discloses a kind of dish-washing machine and its heating devices, wherein heating device includes heating component, relay switch and without water pressure switch, the heating component is for heating the washing pump of dish-washing machine, the no water pressure switch is used to detect the hydraulic pressure in the washing pump and disconnection and the closure when the hydraulic pressure of the washing pump is greater than or equal to preset threshold when the hydraulic pressure of the washing pump is less than preset threshold, wherein the heating component, the relay switch and the no water pressure switch are connected in series with each other.The utility model proposes dish-washing machine and its heating device, simplify master control borad PCB on the basis of, preferably resolve the safety problem of the anhydrous dry combustion method of heat generating component.

Description

A kind of dish-washing machine and its heating device

Technical field

The utility model relates to dish-washing machine technical field more particularly to a kind of dish-washing machines and its heating device.

Background technique

Dishwasher product is favored by the majority of consumers at present, be mounted in cabinet or be placed on table top etc., to meal Tool is cleaned, is taken care of, and solves the pain of the postprandial wash dishes of people, as dish-washing machine is more and more popularized in life Using user is to the also higher and higher using the requirement of secure context of dish-washing machine.

Dishwasher into operation is usually to pass through prewashing, lead and wash, the rinsing of cold rinse, hot water, dry five stages, each stage Have into water, washing, drainage procedure, wherein main wash needs to carry out water to be heated to set temperature with hot water rinsing joggle, makes to eat The obstinate swill that tool surface depends on achievees the purpose that improve and cleans effect convenient for washing away.Wherein water is heated It needs that heating element is arranged, in existing dish-washing machine, usually connect heating element as shown in Figure 1 with no water pressure switch Together, relay switch K1 is to the washing of washing pump or other controls, and relay switch K2 is the heating control to washing pump System；In the case where heating element heats, no water pressure switch K3 carries out pressure detecting, then testing result is fed back to master control borad PCB, master control borad PCB again control relay switch K2 accordingly；When water shortage in dish-washing machine, no water pressure switch K3 is disconnected, and master control borad PCB receives the testing result of no water pressure switch K3, and control relay switch K2 is disconnected, control heating Element does not heat, to play the security risk for preventing the anhydrous dry combustion method of heating element from occurring.The control journey of master control borad PCB therein Sequence is more complex, and the temperature of dish washer interior can not control well, there will still likely be security risk in use.

The disclosure of background above technology contents is only used for the design and technical solution that auxiliary understands the utility model, not The prior art for necessarily belonging to present patent application shows above content in the applying date of present patent application in no tangible proof In the case where having disclosed, above-mentioned background technique should not be taken to the novelty and creativeness of evaluation the application.

Utility model content

In order to solve the above technical problems, simplifying master control borad the utility model proposes a kind of dish-washing machine and its heating device On the basis of PCB, the safety problem of the anhydrous dry combustion method of heat generating component is preferably resolved.

In order to achieve the above object, the utility model uses following technical scheme:

One embodiment of the utility model discloses a kind of heating device of dish-washing machine, including heating component, relay It switchs and without water pressure switch, the heating component is for heating the washing pump of dish-washing machine, the no water pressure switch For detect the hydraulic pressure in the washing pump and the hydraulic pressure of the washing pump be less than preset threshold when disconnect and in the washing The hydraulic pressure of pump is closed when being greater than or equal to preset threshold, wherein the heating component, the relay switch and the no hydraulic pressure Power switch is connected in series with each other.

Preferably, the heating component includes heating element and at least one temperature detect switch (TDS), wherein the temperature detect switch (TDS) with The heating element is serially connected.

Preferably, the heating component includes heating element and two temperature detect switch (TDS)s, one of them described temperature detect switch (TDS) is Normally closed switch at 95 DEG C or less, normally closed switch when another described temperature detect switch (TDS) is 150 DEG C or less.

Preferably, the heating device further includes shield, and the shield is fixedly connected in the heating component.

Preferably, the heating component includes that pedestal, heater strip and two temperature detect switch (TDS)s, the heater strip are fixedly installed on On the pedestal, two temperature detect switch (TDS)s are respectively fixedly connected at the head and the tail both ends of the heater strip.

Preferably, the pedestal is disk-like structure.

Preferably, the heating device further includes shield, and the shield is disk-like structure, is fixedly connected on the base On seat.

Preferably, the no water pressure switch is connected in series between the heating component and the relay switch.

Another embodiment of the utility model also discloses a kind of dish-washing machine, including washing pump, is filled using above-mentioned heating It sets and the washing pump is heated.

Compared with prior art, the utility model has the beneficial effects that: the dish-washing machine of the preferred embodiment in the utility model Heating device, by that will connect without water pressure switch with heating component so that participate directly in without water pressure switch plus The circuit of heater circuit, heat generating component idle Mechanical course protected mode when realizing water shortage, no longer needs to pass through master control borad PCB is controlled indirectly, to simplify master control borad PCB, reduces the writing difficulty of master control borad PCB control program；And compared with The good safety problem for solving the anhydrous dry combustion method of heat generating component.

Further, it by least one temperature detect switch (TDS) of connecting on the heating element of heating component, realizes and is sent out in inside Blocking when temperature increases in the case where raw dry combustion method, prevents dish washer interior plastic ageing or dissolution, further enhances and wash the dishes The safety of machine during heating.

Further, shield is fixedly connected in heating component, it can be by adding in heating component by shield The power supply line of thermal element and dish washer interior, which is effectively isolated, to come, prevent internal wiring aging, damage in addition it is on fire, thus Effectively eliminate security risk.

Detailed description of the invention

Fig. 1 is the schematic diagram of the heating device of dish-washing machine in the prior art；

Fig. 2 is the schematic diagram of the heating device of the dish-washing machine of the preferred embodiment in the utility model；

Fig. 3 is the structural schematic diagram of the heating component in the heating device of the dish-washing machine of the preferred embodiment in the utility model；

Fig. 4 is the structural schematic diagram of the shield in the heating device of the dish-washing machine of the preferred embodiment in the utility model；

Fig. 5 is the assembling schematic diagram of the heating device of the dish-washing machine of the preferred embodiment in the utility model.

Specific embodiment

Below against attached drawing and in conjunction with preferred embodiment, the utility model is described in further detail.

As shown in Fig. 2, the heating device of the dish-washing machine of the preferred embodiment in the utility model includes heating component 10, relay Switch K2 and without water pressure switch K3, heating component 10 is for heating the washing pump 30 of dish-washing machine, no water pressure switch K3 is used to detect hydraulic pressure in washing pump 30 and disconnects when the hydraulic pressure of washing pump is less than preset threshold and in the hydraulic pressure of washing pump It is closed when more than or equal to preset threshold, wherein heating component 10, relay switch K2 and is serially connected without water pressure switch K3 Connection, in this embodiment, no water pressure switch K3 is connected in series between heating component 10 and relay switch K2.It is relayed Electric switch K1 is used for the control washed to washing pump 30.

In conjunction with Fig. 3, heating component 10 includes pedestal 11, heater strip 12, temperature detect switch (TDS) K4, temperature detect switch (TDS) K5, heater strip 12 It is fixedly installed on pedestal 11, temperature detect switch (TDS) K4 and temperature detect switch (TDS) K5 are connected in series with heater strip 11 respectively, and specifically, temperature control is opened Close the head and the tail both ends that K4 and temperature detect switch (TDS) K5 is connected to heater strip 11；Wherein temperature detect switch (TDS) K4 is 95 DEG C or less make and breaks often It closes, normally closed switch when temperature detect switch (TDS) K5 is 150 DEG C or less；Pedestal 11 is disk-like structure, and in specific example, pedestal 11 can be Stainless steel disc, multiple screw holes 111 of uniformly arranging at the excircle of pedestal 11.

It further include shield 20 in the heating device in conjunction with Fig. 4, shield 20 is that the disk-like structure of insulation specifically can Think plastics disk cover structure, multiple screw holes 21 of similarly uniformly arranging at the excircle of shield 20, as shown in connection with fig. 5, Shield 20 is fixedly connected by screw with heating component 10, and is fixedly connected on the pedestal 40 of dish-washing machine together.

The preferred embodiment in the utility model also discloses a kind of dish-washing machine, including pedestal 40, washing pump 30 and above-mentioned Heating device.

The working principle of the heating device of the dish-washing machine of the preferred embodiment in the utility model are as follows: washing pump 30 is filled joined After the water of foot, relay switch K2 and relay switch K1 is closed by master control borad PCB control, and washing pump 30 carries out washers Make, the hydraulic pressure in washing pump 30 is detected without water pressure switch K3 at this time, if hydraulic pressure not enough if do not heat, washing pump 30 Still it works normally, is formed into a loop until being closed when hydraulic pressure is enough without water pressure switch K3, heater strip 12 carries out washing pump 30 Heating；If broken down in use without water pressure switch K3, leading to heating element dry combustion method, internal temperature increases, this When temperature detect switch (TDS) K4 and temperature detect switch (TDS) K5 can play the role of multiple protective.

The heating device of the dish-washing machine of the preferred embodiment in the utility model, by will without water pressure switch and heating component into Row series connection, so that participating directly in the circuit of heater circuit without water pressure switch, heat generating component does not work when realizing water shortage Mechanical course protected mode, no longer need to be controlled indirectly by master control borad PCB, to simplify master control borad PCB, reduce The writing difficulty of master control borad PCB control program；And preferably resolve the safety problem of the anhydrous dry combustion method of heat generating component.Further It is realized by least one temperature detect switch (TDS) of connecting on the heating element of heating component in the case where dry combustion method occurs for inside on ground Blocking when temperature increases, prevents dish washer interior plastic ageing or dissolution, further enhances dish-washing machine during heating Safety.Further, shield is fixedly connected in heating component, it can be by adding in heating component by shield The power supply line of thermal element and dish washer interior, which is effectively isolated, to come, prevent internal wiring aging, damage in addition it is on fire, thus Effectively eliminate security risk.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For those skilled in the art of the present invention For, without departing from the concept of the premise utility, several equivalent substitute or obvious modifications, and performance can also be made Or purposes is identical, all shall be regarded as belonging to the protection scope of the utility model.

Claims (9)

1. a kind of heating device of dish-washing machine, which is characterized in that including heating component, relay switch and without water pressure switch, The heating component is for heating the washing pump of dish-washing machine, and the no water pressure switch is for detecting in the washing pump Hydraulic pressure and disconnect and be greater than or equal in the hydraulic pressure of the washing pump pre- when the hydraulic pressure of the washing pump is less than preset threshold If being closed when threshold value, wherein the heating component, the relay switch and the no water pressure switch are connected in series with each other.

2. heating device according to claim 1, which is characterized in that the heating component includes heating element and at least one A temperature detect switch (TDS), wherein the temperature detect switch (TDS) is serially connected with the heating element.

3. heating device according to claim 1, which is characterized in that the heating component includes heating element and two temperature Control switch, normally closed switch when one of them described temperature detect switch (TDS) is 95 DEG C or less, another described temperature detect switch (TDS) are 150 DEG C or less When normally closed switch.

4. heating device according to claim 1, which is characterized in that further include shield, the shield is fixedly connected In the heating component.

5. heating device according to claim 1, which is characterized in that the heating component includes pedestal, heater strip and two A temperature detect switch (TDS), the heater strip are fixedly installed on the pedestal, and two temperature detect switch (TDS)s are respectively fixedly connected with described The head and the tail both ends of heater strip.

6. heating device according to claim 5, which is characterized in that the pedestal is disk-like structure.

7. heating device according to claim 6, which is characterized in that further include shield, the shield is plate-like knot Structure is fixedly connected on the pedestal.

8. heating device according to any one of claims 1 to 7, which is characterized in that the no water pressure switch series connection connects It connects between the heating component and the relay switch.

9. a kind of dish-washing machine, including washing pump, which is characterized in that use the described in any item heating devices pair of claim 1 to 8 The washing pump is heated.